INDIAN SCHOOL MUSCAT – MIDDLE SECTION – DEPARTMENT OF MATHEMATICS –TERM :01 ( 2018 – 19 ) NAME OF THE STUDENT : DATE : 10.05.2018
2
SUB: MATHEMATICS
TOPIC: UNDERSTANDING QUADRILATERALS
S.NO 1
CLASS : 8 SEC :
WORKSHEET NO:02
ANSWER THE FOLLOWING QUESTIONS Find the sum of the exterior angles of a decagon. Find the number of diagonals in a polygon with 14 sides.
3
The interior angle of a regular polygon is four times its exterior angle. How many sides does the polygon have? Name the polygon.
4
Write two differences between rhombus and square.
5
In a parallelogram ABCD, DAB = 75°. Find the measure of DCB and ABC
6
The angles of a quadrilateral are in the ratio3 : 4 : 6 : 7 .Find the measure of each angle. What type of quadrilateral is it?
7
Sum of the interior angles of a polygon is 1980°. Find the number of sides.
8 9 10
I am a special quadrilateral in which my two adjacent sides are 7cm each and the other two adjacent sides are 10cm each. Who am I? The point of intersection of diagonals of a quadrilateral divides one diagonal in the ratio 2: 3.Is it a parallelogram? Why or why not? Find the angles of a parallelogram if one angle is 30° less than twice its adjacent angle.
Find x in the given figure.
90°
90° 3x x
11 80° A 12
B
ABCD is a rectangle. If AM = 2y+5 and DM = 4y – 15 Find the length of each diagonal.
M D
C E
F 3a
13
EFGH is an isosceles trapezium. Find the values of a and b. H 6a
14 15
16
4b G
Find the sum of the interior angles of a regular polygon with each exterior angle of measure 45° One of the diagonals of a rhombus is 16cm. If the perimeter of the rhombus is 68 cm, fine the length of the other diagonal. D C
ABCD is a rhombus in which ABD = 40° Find BAC , BCD and ADC
O A
B
